books.google.com.ph - This Osprey title details the epic four-month siege of the city of Constantinople in 1453, last vestige of the once mighty Roman and Byzantine Empires. Mehmet &#39;The Conqueror&#39; led an army of 80,000 men with a massive siege train against the city. Defending were a mere 10,000 men under the Emperor...http://books.google.com.ph/books/about/Constantinople_1453.html?id=9yGRZTZhlDQC&utm_source=gb-gplus-shareConstantinople 1453